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  1. import java.util.*;
  2. import java.io.*;
  3.  
  4. class Ideone
  5. {
  6.     public static void main(String[] args) {
  7.         final NavigableSet<String> set = new TreeSet<>(Arrays.asList("1.0", "1.1", "1.2", "3.0", "3.1", "4.0"));
  8.         System.out.println("After 1.0: " + set.higher("1.0"));
  9.         System.out.println("Before 1.0: " + set.lower("1.0"));
  10.         System.out.println("After 1.1: " + set.higher("1.1"));
  11.         System.out.println("Before 1.1: " + set.lower("1.1"));
  12.         System.out.println("After 1.2: " + set.higher("1.2"));
  13.         System.out.println("Before 1.2: " + set.lower("1.2"));
  14.         System.out.println("After 4.0: " + set.higher("4.0"));
  15.         System.out.println("Before 4.0: " + set.lower("4.0"));
  16.     }
  17. }
Success #stdin #stdout 0.11s 35960KB
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stdin
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Standard input is empty
stdout
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After 1.0: 1.1
Before 1.0: null
After 1.1: 1.2
Before 1.1: 1.0
After 1.2: 3.0
Before 1.2: 1.1
After 4.0: null
Before 4.0: 3.1
https://ideone.com/uVOL85
language:
Java (HotSpot 12)
created:
5 years ago
visibility:
public

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